[MC-2363] Add parsing of url params on open-url action

[nishant-clevertap]

• Added parsing of urls on open-url action.
• This will track the parameters in url for in-app in Notification Clicked event.
• This will also parse __dl__ if wzrk_c2a is present in query parameters or action URL.
• Fixes an issue where wzrk_c2a value is passed as null to backend when we receive null for callToAction value in webView message handler. Example:

var message = { action:'triggerInAppAction', actionJson: actionJson, callToAction: null, buttonId: null };
window.webkit.messageHandlers.clevertap.postMessage(message);

For above script we get message as below where value for callToAction is of NSNull class:

{
    ...
    buttonId = "<null>";
    callToAction = "<null>";
}

[nzagorchev]

My understanding is that we want to apply the parsing of the URL params for all in-app templates. The current changes apply only to HTML templates that use the JS Interface triggerInAppAction.

The code added is a duplicate of the code in CTInAppHTMLViewController. Please, reuse the code, check if it is better to move it to handleNotificationAction and/or the utils.